Roll-film camera



Nov. 30, 1943.

H. NERWaN ET AL.

ROLLFILM CAMERA Filed June 18, 1940 3 Sheets-Shea?. l

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H. NERWIN ETAL ROLLFILM CAMERA Filed June 18, 1940 3 Sheets-Shee 2 Nov. 30, 1943.

W EEE- Eum Nov. 30, 1943. IH. NERwlN ETAL ROLLFILM CAMERA 3 Sheets-Sheet 3 Filed June 18, 1940 Patented Nov. 30, 1943 y 2,335,439 BOLL-mM CAMERA Hubert Nerwin and Karl Wunderlich, Dresden,

Germany; vested in the Alien Property Custodian . Application June 18, 1940, Serial No. 341,164

In Germany June 19, 1939 Claims.

The invention relates to improvements in rollfilm cameras, and particularly is directed to miniature cameras equipped with a central shutter. In cameras of this type the central shutter is combined with the photographic objective and is mounted with the latter on a support adapted to be moved in axial direction toward and away from the rllm in the focal plane.

It is an object of the invention to provide the rolliilm camera with a manually operable member on the front wall of the camera casing for simultaneously tensioning the central shutter and advancing the film for bringing the ,next

unexposed film section in aposition behind the Another object of the invention is-to use said cup-shaped carrier as a support for a member which is operatively connected with the nlm advancing mechanism and actuates the customary shutter tensioning lever whenever the nlm is advanced.

vOther objects of the invention will be apparent or will be specifically pointed out in the description forming a part of this specification, but the invention is not limited to the embodiment of the invention herein described, as various forms may be adopted within the scope of the claims.

In the drawings:

Fig. lis a perspective view of a. lrollfilm camera of the present invention.

Fig. 2 is a top plan view of the rolllm camera in extended operative position, with parts in section.

Fig. 3 is a similar view as Fig. 2, except that the extensible part of the camera has been moved into the camera casing to its inoperative position.

Fig. 4 is a vertical sectional view of a portion of the camera, substantially along the line IV-IV of Fig. 2 and looking in the direction of the arrows. l

Fig. 5 is a perspective View of an objective and shutter carrier employing a ring-sector member for actuating the shutter tensioning mechanism and showing the operating bar for the ring-sector member connected thereto.

Fig. 6 is a detailed elevation with parts in section of the gear train employed in advancing the film and shows the drive bar used to actuate the shutter tensioning mechanism connected directly to one of the gears in the gear train.

Fig. 'l is a perspective View, with parts broken away, of the front wall of the camera'casing and shows a drive ring rotatably mounted thereon and adapted to be connected to the film advancing mechanism of the camera together with mpdiiied means, which employs gearing, for rotating the drive ring. l

Fig. 8 is a view similar to Figure 6 showing a modification of the actuating means for drivingthe film advancing mechanism. 1

Referring to the drawings, the front wall 2 of the camera casing I has rotatably attached thereto, for instance by means of a ne thread 3, an annular member 4 concentrically with respect to the axis of the photographic objective 5. An arm 6 extending outwardly from said annular member 4 terminates at a point Just above the top wall 'l of the camera casing I in a finger piece 8 which is engaged by the yuser of the camera to be depressed when the nlm is to be advanced and the shutter is to be tensioned.

A bar I0, which according to Fig. 4 is positioned in the camera casing I spaced from and substantially parallel to the top wall 1 thereof, is pivotally connected at one end by a pin I2 to the upper portion of the annular member 4 -and with its other end at I3 (Figs. 2 and 3) to an oseillatable member I4 Awhich forms one element of the film advancing mechanism. The member I 4 is rotatable on a'shaft I6 which also supports a gear I8 xedly attached to a ratchet wheel 49; the latter is adapted to be rotated step by step in clockwise direction by a spring innuenced pawl 20 pivotally attached at 22 to the member I4. A holding pawl 24 prevents a return movement of the ratchet wheel Illy and gear I8, while a spring 25al acting on the bar III returns the latter and therewith the annular member l and the oscillatable member I4 to their initial position after each manual depression of the lnger piece 8.

The gear I8 meshes with a gear 25 on the shaft 26 carrying the film take-up spool engaging clutch member 2l and also meshes with a gear 28 on the shaft 29 carrying the customary nlm advancing sprocket 30. The film supply spool 32 or cartridge is mounted in a chamber 33 at the other end of the camera casing l, as shown in Figs. 2 and 3.

The oscillatable member I4 is also connected at 35 with one end of a second bar 35, whose other end is pivotally attached at 35 to an inwardly bent lug 38 of a ring 31, which ring 31 is rotatably mounted by means of a thread of low pitch within the cup-shaped carrier fill for the photographic objective and the central shutter ll. The central shutter lll, which is flxedly at tached to the inner face of the bottom wall 39 of the carrier 50, coaxially with the objective, is provided with an outwardly projecting tensioning lever` 62 extending into the path of movement of an axially extending lug 43 of the ring 3l to be actuated by the latter each time` the bar 35 rotates the ring in clockwise direction when the iinger piece 8 is manually depressed.

It thus is apparent, that upon a depression of the finger piece 8 the annular member 5 is rotated clockwise, against the action of the spring 259', and thereby simultaneously advances the iilm one step-.which step is equal the length of one pictureand tensions the shutter 63|.

The photographic objective 5 is provided for focusing purposes with a rotatably adjustable front'l lens in amount l5 extending outwardly from the wall 39 of the cup-shaped carrier 50. The outer circumference of the mount 55 is provided with a focusing scale 45. A depressible shutter release member 58 is preferably arranged on the top wall l of the camera casing I.

The depression of the release member 48 during an exposure is transferred to the release lever 55 of the shutter il by a linkage 54. A lever 55 projecting over the front side of the carrier l0 through a slot 5l serves to set the diaphragm of the objective 5 by means of a scale 58. For.,

the purpose of setting the exposure time of the shutter 4l there is provided a further lever 59 projecting through a slot 60 in front of the carrierl Ml. The correctv setting of the exposure time is.

readable through a window 6i in the front side of the carrier40. l

The curi-shaped carrier Ml, with the photographic objective 5 and central shutter 4I thereon, is mounted for axially slidable movement'in the camera casing. The carrier Ml is guided in its mounting 52 in the camera housing l by means of a wedge 50 and a 'groove 5|;it is held in the extended or unextended position by elastic stops 53. In Fig. 2' the carrier 40 is shown axially extended, in which position the camera is in operative condition. The iilm advanclng mechanism is shown in a position in which the film is being advanced and the shutter being tensioned. Fig. 3 shows the inoperative position of the camera, in which the carrier 4G and the parts connected therewith have been retracted or pushed into the camera casing, thus reducing the space required for storing or carrying the camera in a pocket or the like .to a minimum. The shutter is shown in tensioned position, ready to be released, while all other parts, as 4, 6, I0 are shown in their initial position.

In ordel` to insure a faultless operation of the shutter tensioning mechanism 35, 3l, 43, 42, even inoperative position respectively of the camera.

A carrier. It will also be noted that the line X-X is substantially parallel to the front Wall 2 of the camera casing -i and lies in a plane which intersects the optical axis of the objective 5 at a right angle. The vdistance which the cup-shaped carrier @il may be axially moved into the camera casing is indicated with z in Fig. 2.

The ring 3l with its two lugs 38 and 33 may be substituted by an oscillating device having the form of a ring sector-shaped member 3la (see Fig. 5). lThe pivotal connection of the bar 35 with the lm advancing mechanism does not have to be located directly on the oscillatable member I6, but may be located on an intermediate member, as for instance on a gear of a train of gears, which in turn is connected with the film advancing mechanism (see Fig. 6). It is also possible to provide a manually operable linger piece 8 which by means of a gear or a gearing actuates the annular member (see Fig. '7). Furthermore, the rapid acting wind-up device consisting of the parts d, 8, I2 and 25 may be substituted by a rotatable button or a lever 8a which acts directly on the film advancing mechanism i8, I9, 25 and which at the same time operates the bar 35 of the shutter tensioning device (see Fig. 8).

What we claim is;v

1. `In a rolllm'camera, a camera casing having a front wall, a photographic objective, a central f shutter provided with a shutter tensioning lever,

justable front lens projecting outwardly through the bottom wall of said cup-shaped carrier, said .camera casing being provided with a recess extending inwardly from said front wall for axially slidably supporting said carrier for moving said f objective and shutter from a retractedl inoperative position within said camera casing to an extended operative position and vice versa, means in the retracted inoperative position of the carrier for preventing a rotative movement of said carrier within said recess, a lm advancing mechanism within vsaid camera casing, a ring for actuating said shutter tensioning lever mounted rotatably within said cup-shaped carrier, a bar operatively connecting said iilm advancing mechanism with saidring, a manually rotatable member mounted on the outer face of the front wall of said camera casing so as to be rotatable about the common., axis of said carrier, objective and shutter, anda connecting rod within said camera .casing for operatively connecting said manually 'otatable member with said lm advancing mechanism, whereby upon a manual rotation of said rotatable member in one direction said iilm ad vancing mechanism and said ring are operated simultaneously to advance the lm and tension vthe shutter respectively.

recess extending inwardly from said front wall moving said objective and shutter from a retracted inoperative position within said camera casing to an extended operative position and vice versa, means for preventing a rotative movement of said carrier within said recess, a nlm advancing mechanism within said camera casina a ring for actuating said shutter tensioning lever rotatably supported by said cup-shaped carrier so as to be oscillatable about the optical axis of said objective and movable with said carrier in axial direction, a bar operatively connecting said hlm advancing mechanism with said ring, the line bisecting the angle formed between the two end positions of said bar in the retracted and extended position respectively of said cup-shaped carrier being positioned substantially in a plane intersecting the optical axis of the photographic objective at a right angle, a manually rotatable member-on the outside of said camera casing and means including a connecting rod, operatively connecting saidv member with said lm advancing mechanism, whereby upon a manual rotation of said rotatable member in one direction said nlm advancing mechanism and said ring are operated simultaneously to advance the illm and tension the shutter respectively.

3. In a rolllm camera, a camera casing having a front wall, a photographic objective, a central shutter with a shutter tensioning lever, a cupshaped carrier within which saidshutter and objective are mounted in coaxial relation with said carrier, the front end of said objective projecting outwardly through the bottom wall of said carrier, said camera casing being provided with a recess extending inwardly from said front wall for axially slidably supporting said carrier for moving said objective and shutter from a retracted inoperative position within said camera casing to an extended operative position and vice versa. means for preventing a rotative movement of said carrier within said recess, a nlm advancing mechanism within said camera'casing, a ring for actuating said shutter tensioning lever rotatably supported by the circumferential-wall of said cup-shaped carrier so as to be oscillatable about the optical axis of said objective and movable with said carrier in axial direction, a bar operatively connecting said illm advancing mechanism with said ring, the line bisecting the angle formed between the two end positions of said bar in the retracted and extended position respectively of said cup-shaped carrier extending substantially parallel to the front wall of said camera casing, a manually rotatable member mounted on the front wall of said camera' casing so as to be rotatable about the common axis of said carrier, objective and shutter, and means including a connecting rod within said camera 'casing for operatively connecting said manually rotatable member with said iilm advancing mechanism, whereby upon a manual rotation of said rotatable member in one direction said film advancing mechanism and said shutter tensioning lever are operated simultaneously to advance the film and tension the shutter respectively.

4. A rolllm camera as claimed in claim 1, in which said cup-shaped carrier is slidably supported by said manually rotatable member which is mounted rotatably on the front wall of the camera casing and forms a portion of the supporting wall oi' said recess.

5. A rollillm camera as claimed in claim 1, in which said shutter tensioning lever is actuated by an axially extending lug on the ring which is rotatably supported at the inner open end oi said cup-shaped carrier, said ring having a second lug which by means of said bar is operatively connected with said illm advancingv mechanism.

HUBERT NERWIN. KARL W'UNDERLICH. 

